Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a4a9024368a2dd0…

MALICIOUS

PDF

93.2 KB Created: 2020-12-02 17:23:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 30c0195b632fe49e784075a108971688 SHA-1: 1946275fd74f953e70bd54e06f9f602b0198bfad SHA-256: 4a4a9024368a2dd060fa55f0898757f838036b788d23c6466ca9b92e4307a217
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffset.ru', which is likely a malicious domain used for phishing or distributing further payloads. The document body, though heavily obfuscated, appears to reference 'Luigi's mansion 3 guide', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/aws?utm_term=luigi%2527+s+mansion+3+guide+9f PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379852/normal_5fa28281b773d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418175/normal_5f9d248b3ad61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382618/normal_5f903d53c4520.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/fmg_4471_approval_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b19076f-c02f-49f1-893f-6d90d9e9073c/39295652837.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc2710c08845d0924d8dda3/1606578444963/ugliest_wedding_dresses_on_say_yes_to_the_dress.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2f419f1-e0ba-452f-a6ac-fbc4b62aa5a2/tepere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ed8ef3-2e5c-4d1e-8b18-379f51baae90/laremerifutaribuwile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7181aec-0b37-4fdf-aa4c-d88b52b4d8b8/milisifimilozoteno.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/25797887631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac9d1d84-1aeb-48da-a59d-6123497eb078/zufosanibilawebivav.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27b65a8793968641242c3/t/5fc62e36f3de5e49b537f334/1606823479507/indycar_race_results_portland.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFC 5196 bytes
SHA-256: dfb6ce47ce28faeab5a0fa7cfc3b37d3f7562add27809804fdb1bc4fa0ee596a
font_01_sfnt_off00011d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D83 7828 bytes
SHA-256: f62aa759f581bed8465e58eba8961d9410ef80a13d2278e87429d57c4e5a0a19
font_02_sfnt_off00013312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13312 11184 bytes
SHA-256: 5870ec92ed35856c7ff40c7c470cc718f868d05e966bca24be28048d845402e5
font_03_sfnt_off0001592c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1592C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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